Sample PGCluster Architecture
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Description of each server's configuration files are that in the system
composition of the following figure.
A set up of "/etc/hosts" file
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In order to resolve the address of each server name, a server's host
name and IP address are described in a "/etc/hosts" file.
127.0.0.1 localhost localhost.localdomain
#
# load balancer
#
192.168.0.1 loadbalancer
#
# Cluster DBs
#
192.168.0.11 cluster_1
192.168.0.12 cluster_2
192.168.0.13 cluster_3
#
# replication server
#
192.168.0.21 replicate_upper
192.168.0.22 replicate_lower
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